Manganese Sulfate Monohydrate: Product Characteristics and Key Applications

Product Overview

Manganese sulfate monohydrate (MnSO₄·H₂O) is a pale pink, water-soluble inorganic manganese salt widely used in fertilizers, animal nutrition and industrial applications.

With a manganese content of approximately 31%, it provides an efficient source of manganese, an essential micronutrient involved in plant photosynthesis, enzyme activation, animal metabolism and the production of manganese-based compounds.

The product is generally manufactured by reacting manganese-containing raw materials with sulfuric acid, followed by purification, crystallization and drying.

Chemical and Physical Properties

Property	Details
Chemical Formula	MnSO₄·H₂O
CAS Number	10034-96-5
Molecular Weight	169.02 g/mol
Appearance	Pale pink crystalline powder
Odor	Odorless
Density	Approx. 2.95 g/cm³
Bulk Density	1,000-1,200 kg/m³
Solubility	Soluble in water
pH	3.0-3.5 at 50 g/L, 20°C
Moisture Sensitivity	Hygroscopic

Typical Specification

Test Item	Unit	Specification
Manganese Sulfate	%	≥98.0
Manganese, as Mn	%	≥31.0
Arsenic, As	ppm	≤3.0
Lead, Pb	ppm	≤5.0
Cadmium, Cd	ppm	≤10.0
Water-Insoluble Matter	%	≤0.10
Fineness, through 250 μm sieve	%	≥95.0

Applications

Agriculture and Fertilizers

Manganese sulfate monohydrate is widely used to prevent and correct manganese deficiency in crops.

Manganese supports:

• Photosynthesis and chlorophyll formation

• Enzyme activation

• Nitrogen metabolism

• Healthy crop growth and yield development

It can be used in foliar sprays, soil applications, compound fertilizers, water-soluble fertilizers and micronutrient blends.

Typical crops include cereals, citrus, soybeans, vegetables, fruits and legumes.

Animal Nutrition

Feed-grade manganese sulfate is used as a trace mineral supplement in livestock and poultry feed. It supports bone development, metabolism, enzyme activity and reproductive performance.

Only products meeting applicable feed-grade and regulatory requirements should be used for animal nutrition.

Industrial Applications

Manganese sulfate may also be used in:

• Manganese compound production

• Ceramics, glass and pigments

• Textile and leather processing

• Water treatment

• Chemical manufacturing

High-purity manganese sulfate can be used as a precursor for manganese-containing battery cathode materials. Standard fertilizer-grade material should not be considered battery-grade unless specifically purified and qualified.

Production

The product is typically manufactured through:

1. Acid leaching of manganese-containing raw materials

2. Solution purification and filtration

3. Concentration and crystallization

4. Drying, screening and packaging

Handling and Storage

• Store in a cool, dry and well-ventilated area.

• Keep packaging tightly sealed and protected from moisture.

• Avoid inhaling dust.

• Wear gloves, safety glasses and suitable protective equipment.

• Prevent spills from entering drains or waterways.

• Dispose of waste according to local regulations.

Summary

Manganese sulfate monohydrate is an important source of manganese for crop nutrition, animal feed and industrial processing. Its high manganese content, good water solubility and broad compatibility make it a widely used micronutrient and chemical raw material.

Manganese Sulfate Monohydrate: Product Characteristics and Key Applications